nginx处理动态程序好多400错误

我前几天配置了nginx+fastcgi(php-fpm),但是我这几天经过观查了一下tail -f access.log|grep " 400 ",发现服务器有好多400错误,large_client_header_buffers 4 32k;我也加上去了,但是400还是有很多,我在也问了几个朋友他们说这个是nginx正常的情况,说明nginx吃不消了,但是我感觉不大可能.我看了一下服务器的当前,包数才2000个,流量也只有2M左右,想请教一下,如果我这样配置是不是真的说明nginx吃不消了,


400错误日志如下
220.255.7.194 - - [20/Aug/2008:22:38:30 +0800] "-" 400 0 "-" "-" -
60.190.0.78 - - [20/Aug/2008:22:38:31 +0800] "-" 400 0 "-" "-" -
220.202.4.12 - - [20/Aug/2008:22:38:31 +0800] "-" 400 0 "-" "-" -
220.202.4.12 - - [20/Aug/2008:22:38:31 +0800] "-" 400 0 "-" "-" -
58.220.236.250 - - [20/Aug/2008:22:38:33 +0800] "-" 400 0 "-" "-" -
117.40.118.93 - - [20/Aug/2008:22:38:33 +0800] "-" 400 0 "-" "-" -
222.242.65.94 - - [20/Aug/2008:22:38:34 +0800] "-" 400 0 "-" "-" -
58.220.236.250 - - [20/Aug/2008:22:38:34 +0800] "-" 400 0 "-" "-" -
219.152.214.89 - - [20/Aug/2008:22:38:34 +0800] "-" 400 0 "-" "-" -
58.33.12.209 - - [20/Aug/2008:22:38:35 +0800] "-" 400 0 "-" "-" -
60.50.171.133 - - [20/Aug/2008:22:38:36 +0800] "-" 400 0 "-" "-" -



http
{
     include       mime.types;
     default_type  application/octet-stream;

     charset  gb2312;

     server_names_hash_bucket_size 128;

     #sendfile on;
     #tcp_nopush     on;

     keepalive_timeout 65;

     tcp_nodelay on;

     fastcgi_connect_timeout 60;
     fastcgi_send_timeout 180;
     fastcgi_read_timeout 180;
     fastcgi_buffer_size 128k;
     fastcgi_buffers 4 128k;
     fastcgi_busy_buffers_size 128k;
     fastcgi_temp_file_write_size 128k;
     fastcgi_temp_path /dev/shm;

     gzip off;
     #gzip on;
     #gzip_min_length  1k;
     #gzip_buffers     4 8k;
     #gzip_http_version 1.1;
     #gzip_types       text/plain application/x-javascript text/css text/html application/xml;
     #access_log  off;

     client_header_buffer_size 16k;
     large_client_header_buffers 4 32k;

期待中....

400-错误的请求，发生错误，客户端似乎有问题。例如，客户端请求不存在的页面，客户端未提供有效的身份验证信息

楼主解决了问题没有

解决了的话说说经验